"It's happened quickly but I'm going to keep my feet on the ground and work harder and harder.
"The next step is to try and win in South Africa and hopefully I can perform as well."
The 18-man squad is overseen by head coach Michael Yardy and includes 16-year-old off-spinner Farhan Ahmed, younger brother of England international Rehan, highly-rated leg-spinner Tazeem Ali and Durham's pace prospect James Minto.